chore(dashboard): retire the standalone InsightsCardPreview surface

The dashboard preview duplicated the much-richer /insights advisor surface
that already lives one click away (Daily Briefing, hero strip, correlation
row, full advisor, weekly-report banner). The preview also competed
visually with the GLP-1 tile for the same vertical real estate above the
chart row.

Drop the import + render + isChartVisible gate in src/app/page.tsx, drop
the insightsPreview widget entry from src/lib/dashboard-layout.ts, drop
the matching row in src/components/settings/dashboard-layout-section.tsx,
and delete src/components/insights/insights-card.tsx and its test file.
The advisor query hook stays on /insights — the dashboard no longer
mounts it. Update the dashboard-layout contract test to assert the
widget id is absent.

F7 weekly-report scan: ran grep -rinE 'Wochenreport|weekly report|/insights/report' across src/ and messages/. All weekly-report click affordances on /insights are correctly wired (HeroStrip Generate button → currentWeekHref, WeeklyReportBanner → /insights/report/[week], InsightAdvisorCard banner → /insights/report/[week]). The /insights/report/[week] route mounts WeeklyReportView and renders the full surface. No dead click affordance was located inside the 30-minute scan budget. The retired InsightsCardPreview was the only dashboard-anchored insight card with a CTA — its removal in this commit is the most likely reason the maintainer perceived a dead click. F7 deferred to v1.4.28 with a maintainer-screenshot ask; recorded in .planning/v1428-backlog.md.

i18n keys still referenced after this change (B6 sweep will reconcile):
none from this commit. Keys 'dashboard.insightsPreview' and 'insights.aiInsights' are now unreferenced in code and become candidates for B6's dead-key sweep.

src/app/page.tsx

@@ -46,8 +46,6 @@ import { summaryToTrend7Delta } from "@/lib/analytics/trend-delta";
 import { GettingStartedChecklist } from "@/components/onboarding/getting-started-checklist";
 import { TourLauncher } from "@/components/onboarding/tour-launcher";
 import { RecentAchievementsCard } from "@/components/gamification/recent-achievements-card";
-import { InsightsCardPreview } from "@/components/insights/insights-card";
-import { useInsightsAdvisorQuery } from "@/components/insights/use-insights-advisor";
 import { Glp1Tile } from "@/components/dashboard/glp1-tile";
 
 const HealthChart = dynamic(
@@ -234,16 +232,13 @@ export default function DashboardPage() {
     enabled: isAuthenticated,
   });
 
-  // v1.4.16 phase D reconcile (CRITICAL C2) — pull the rich advisor
-  // payload so the dashboard can surface a compact preview of the top
-  // severity-ordered AI recommendations + ring confidence meter +
-  // "View all" CTA. Shares the cache with /insights via the
-  // queryKeys.insightsAdvisor() key so a regenerate on either surface
-  // refreshes the other without a second LLM round-trip. Returns null
-  // when the user has no provider configured (route 422 → null), so
-  // the preview self-hides without burning rate-limit tokens on
-  // unconfigured accounts.
-  const advisor = useInsightsAdvisorQuery(isAuthenticated);
+  // v1.4.27 B1 — the dashboard's `<InsightsCardPreview>` retired (it
+  // duplicated the much-richer `/insights` advisor surface). The advisor
+  // query lives on `/insights` directly; the dashboard no longer needs
+  // its own hook subscription, so the local `useInsightsAdvisorQuery`
+  // call dropped with the preview.
+
+  // TODO(B1+B4 reconcile): wire per-tile availability gate using hasMetricData
 
   const w = data?.summaries?.WEIGHT;
   const sys = data?.summaries?.BLOOD_PRESSURE_SYS;
@@ -340,12 +335,6 @@ export default function DashboardPage() {
   // the layout-toggle gate here. No data-floor check (the empty card is
   // intentional — the maintainer wants the user to discover the feature).
   const showAchievementsCard = isChartVisible("achievements");
-  // v1.4.16 phase D reconcile (CRITICAL C2) — gate the dashboard
-  // insights preview by the layout toggle. The component itself
-  // returns null when the advisor payload is missing or has no
-  // recommendations, so the gate is sufficient — no extra data-floor
-  // check needed.
-  const showInsightsPreview = isChartVisible("insightsPreview");
 
   // Glucose widget — visible iff layout enables it AND at least one reading exists.
   // Glucose has no separate chart slot today, so the tile flag is the
@@ -1247,29 +1236,14 @@ export default function DashboardPage() {
                 ))}
               </div>
             )}
-            {/* v1.4.16 phase D reconcile (CRITICAL C2) — dashboard
-                preview of the polished AI recommendations surface.
-                Pinned above the chart row (out-of-band from the sorted
-                charts[] array) so it stays at the top regardless of
-                widget reorder operations. Self-hides when the user has
-                no provider configured OR no recommendations to surface
-                (`<InsightsCardPreview>` returns null), so the preview
-                doesn't paint an empty card on first visit. */}
-            {showInsightsPreview && (
-              <InsightsCardPreview
-                insight={advisor.payload?.insights ?? null}
-              />
-            )}
             {/* v1.4.25 W6 — GLP-1 status tile. The tile self-gates on
                 `Medication.treatmentClass === "GLP1"` (route returns
                 `data: null` when the user has no active GLP-1 med), so
                 we always mount it and let the tile suppress itself.
-                Slot is below the InsightsCardPreview and above the
-                chart row — high enough that a Mounjaro / Ozempic user
-                sees their dose-response chart without scrolling past
-                BP / pulse, but below the AI preview so the latter
-                stays the "scroll-stop hero" Marc anchored the dashboard
-                around. */}
+                v1.4.27 — the standalone insights preview retired (it
+                duplicated the much-richer `/insights` advisor surface);
+                the GLP-1 tile now anchors the top of the chart-row
+                stack. */}
             <Glp1Tile />
             {charts.map((entry) => (
               <div key={entry.id} className="space-y-2">

src/components/insights/__tests__/insights-card.test.tsx

@@ -1,159 +0,0 @@
-import { describe, it, expect, vi } from "vitest";
-import { renderToStaticMarkup } from "react-dom/server";
-
-import { I18nProvider } from "@/lib/i18n/context";
-import { InsightsCardPreview } from "../insights-card";
-import type { InsightResult, InsightRecommendation } from "@/lib/ai/types";
-
-/**
- * v1.4.16 phase B1b — dashboard InsightsCard preview.
- *
- * The preview is a compact wrapper that surfaces the top 1-2
- * severity-ordered recommendations + a "View all" CTA pointing to
- * the full `/insights` page. Visual language matches the page hero
- * + recommendation grid (Dracula tokens, severity-coloured borders,
- * mini confidence meter).
- */
-
-vi.mock("@/components/charts/health-chart", () => ({
-  HealthChart: () => <div data-testid="health-chart-mock" />,
-}));
-vi.mock("@/components/charts/mood-chart", () => ({
-  MoodChart: () => <div data-testid="mood-chart-mock" />,
-}));
-vi.mock("@tanstack/react-query", () => ({
-  useQuery: () => ({ data: null, isLoading: false }),
-  useMutation: () => ({
-    mutate: vi.fn(),
-    isPending: false,
-    isSuccess: false,
-    isError: false,
-    error: null,
-  }),
-  useQueryClient: () => ({ invalidateQueries: vi.fn() }),
-}));
-vi.mock("@/hooks/use-auth", () => ({
-  useAuth: () => ({
-    user: { id: "test-user", username: "tester", role: "USER" },
-    isAuthenticated: true,
-    isLoading: false,
-  }),
-}));
-
-function rec(
-  id: string,
-  severity: "info" | "suggestion" | "important" | "urgent",
-  text: string,
-  confidence?: number,
-): InsightRecommendation {
-  return {
-    id,
-    text,
-    severity,
-    confidence,
-    rationale: {
-      dataWindow: "last7days",
-      comparedTo: "your 90-day median",
-      deviation: "moderate deviation",
-    },
-    metricSource: {
-      type: "weight",
-      timeRange: "last7days",
-      summary: "84.2 kg avg over 7 days",
-    },
-  };
-}
-
-function buildInsight(recommendations: InsightRecommendation[]): InsightResult {
-  return {
-    insightType: "general",
-    summary: "Test summary",
-    classification: "gut",
-    classificationLabel: "Good",
-    findings: [],
-    correlations: [],
-    primaryRecommendation: "",
-    recommendations,
-    dataQuality: { coverage: "good", gaps: [], confidence: "hoch" },
-    disclaimer: "Not medical advice.",
-  };
-}
-
-function render(node: React.ReactNode, locale: "en" | "de" = "en") {
-  return renderToStaticMarkup(
-    <I18nProvider initialLocale={locale}>{node}</I18nProvider>,
-  );
-}
-
-describe("<InsightsCardPreview>", () => {
-  it("surfaces only the top 2 severity-ordered recommendations", () => {
-    const recs = [
-      rec("a", "info", "info-rec"),
-      rec("b", "urgent", "urgent-rec"),
-      rec("c", "important", "important-rec"),
-      rec("d", "suggestion", "suggestion-rec"),
-    ];
-    const html = render(<InsightsCardPreview insight={buildInsight(recs)} />);
-    expect(html).toContain("urgent-rec");
-    expect(html).toContain("important-rec");
-    // The preview must hide the remaining recs — they live on /insights.
-    expect(html).not.toContain("info-rec");
-    expect(html).not.toContain("suggestion-rec");
-  });
-
-  it("renders the 'View all' CTA pointing to /insights", () => {
-    const recs = [rec("a", "urgent", "urgent-rec")];
-    const html = render(<InsightsCardPreview insight={buildInsight(recs)} />);
-    expect(html).toMatch(/href="\/insights"/);
-    expect(html).toMatch(/data-slot="insights-card-view-all"/);
-  });
-
-  it("paints a severity-coloured left border on each preview card", () => {
-    const recs = [
-      rec("a", "urgent", "urgent-rec"),
-      rec("b", "important", "important-rec"),
-    ];
-    const html = render(<InsightsCardPreview insight={buildInsight(recs)} />);
-    expect(html).toMatch(/border-l-dracula-red/);
-    expect(html).toMatch(/border-l-dracula-orange/);
-  });
-
-  it("renders a mini confidence meter inline when confidence is supplied", () => {
-    const recs = [rec("a", "urgent", "urgent-rec", 78)];
-    const html = render(<InsightsCardPreview insight={buildInsight(recs)} />);
-    // The ConfidenceMeter component renders a 'data-slot="confidence-meter"'
-    // marker; the preview shows the inline ring/bars variant.
-    expect(html).toMatch(/data-slot="confidence-meter"/);
-  });
-
-  it("hides the preview entirely when there are no recommendations", () => {
-    const html = render(<InsightsCardPreview insight={buildInsight([])} />);
-    // The orphan "no recs" state is delegated to the full /insights page.
-    // The preview either renders the top recs OR doesn't mount at all.
-    expect(html).toBe("");
-  });
-
-  it("passes a null insight transparently — no preview", () => {
-    const html = render(<InsightsCardPreview insight={null} />);
-    expect(html).toBe("");
-  });
-
-  it("renders the title slot so dashboard nav can sit alongside", () => {
-    const recs = [rec("a", "urgent", "urgent-rec")];
-    const html = render(<InsightsCardPreview insight={buildInsight(recs)} />);
-    expect(html).toMatch(/data-slot="insights-card-preview"/);
-    // Card title text from the existing translation key.
-    expect(html).toContain("AI Insights");
-  });
-
-  it("German locale — title + view-all CTA translate", () => {
-    const recs = [rec("a", "urgent", "urgent-rec")];
-    const html = render(
-      <InsightsCardPreview insight={buildInsight(recs)} />,
-      "de",
-    );
-    expect(html).toContain("KI-Insights");
-    // "View all" → German "Alle ansehen"
-    expect(html).toContain("Alle ansehen");
-  });
-});

src/components/insights/insights-card.tsx

@@ -1,118 +0,0 @@
-"use client";
-
-import Link from "next/link";
-import { Sparkles, ArrowRight } from "lucide-react";
-import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
-import { Button } from "@/components/ui/button";
-import { useTranslations } from "@/lib/i18n/context";
-import { stripChartTokens } from "@/lib/insights/chart-tokens";
-import type { InsightResult } from "@/lib/ai/types";
-import { sortRecommendationsBySeverity } from "./recommendations-grid";
-import { ConfidenceMeter } from "./confidence-meter";
-
-/**
- * v1.4.16 phase B1b — dashboard <InsightsCardPreview>.
- *
- * Compact preview of the top 1-2 severity-ordered recommendations
- * + a "View all" CTA pointing at `/insights`. Visual language matches
- * the page hero (Dracula gradient sparkle, severity-coloured left
- * border, mini confidence meter inline) so the dashboard reads as
- * a smaller window onto the same surface.
- *
- * Design notes:
- *  - The preview is dashboard-anchored, so it doesn't carry the full
- *    rationale-expand mechanic. Recs render as one-row tiles.
- *  - When the preview has zero recs OR no insight at all, the
- *    component returns `null` so the dashboard's parent card grid
- *    doesn't render an empty box. The full empty-state lives on
- *    `/insights` proper.
- *  - The legacy `InsightsCard` (which fetched its own data + rendered
- *    the v1.4.0 changed/stable/drivers/nextSteps shape) was an
- *    orphan component with zero non-test imports — it's been replaced
- *    by this leaner preview.
- */
-
-interface InsightsCardPreviewProps {
-  insight: InsightResult | null;
-  /** Maximum number of recs to surface; defaults to 2. */
-  topN?: number;
-}
-
-const SEVERITY_BORDER_CLASSES: Record<string, string> = {
-  urgent: "border-l-dracula-red/70",
-  important: "border-l-dracula-orange/70",
-  suggestion: "border-l-dracula-purple/70",
-  info: "border-l-dracula-cyan/70",
-};
-
-const SEVERITY_BORDER_FALLBACK = "border-l-border";
-
-export function InsightsCardPreview({
-  insight,
-  topN = 2,
-}: InsightsCardPreviewProps) {
-  const { t } = useTranslations();
-  if (!insight || insight.recommendations.length === 0) return null;
-
-  const ordered = sortRecommendationsBySeverity(insight.recommendations).slice(
-    0,
-    topN,
-  );
-
-  return (
-    <Card data-slot="insights-card-preview" className="overflow-hidden">
-      <CardHeader className="pb-3">
-        <div className="flex items-center justify-between">
-          <div className="flex items-center gap-2">
-            <Sparkles
-              className="text-dracula-purple h-5 w-5"
-              aria-hidden="true"
-            />
-            <CardTitle className="text-base">
-              {t("insights.aiInsights")}
-            </CardTitle>
-          </div>
-          <Button
-            asChild
-            variant="ghost"
-            size="sm"
-            data-slot="insights-card-view-all"
-            className="gap-1.5"
-          >
-            <Link href="/insights">
-              {t("insights.viewAll")}
-              <ArrowRight className="h-3.5 w-3.5" aria-hidden="true" />
-            </Link>
-          </Button>
-        </div>
-      </CardHeader>
-      <CardContent>
-        <ul className="space-y-2">
-          {ordered.map((rec, index) => {
-            const text = typeof rec === "string" ? rec : rec.text;
-            const severity = typeof rec === "string" ? null : rec.severity;
-            const confidence =
-              typeof rec === "string" ? undefined : rec.confidence;
-            const id = typeof rec === "string" ? `${index}-${rec}` : rec.id;
-            const borderClass =
-              (severity && SEVERITY_BORDER_CLASSES[severity]) ||
-              SEVERITY_BORDER_FALLBACK;
-            return (
-              <li
-                key={id ?? index}
-                className={`bg-card/40 flex items-start justify-between gap-2 rounded-md border-l-2 px-3 py-2 ${borderClass}`}
-              >
-                <p className="text-sm leading-snug">{stripChartTokens(text)}</p>
-                {typeof confidence === "number" && (
-                  <span className="shrink-0">
-                    <ConfidenceMeter value={confidence} variant="ring" />
-                  </span>
-                )}
-              </li>
-            );
-          })}
-        </ul>
-      </CardContent>
-    </Card>
-  );
-}

src/components/insights/use-insights-advisor.ts

@@ -23,9 +23,9 @@ import { queryKeys } from "@/lib/query-keys";
  * C1+C2 specifically because it assumed that duplication was required,
  * but the route already supports the cache-aware path.
  *
- * Both `/insights` (`<InsightAdvisorCard>`) and `/` (`<InsightsCardPreview>`)
- * mount the query under the same key, so a regenerate from either surface
- * refreshes the other without a second LLM call.
+ * `/insights` (`<InsightAdvisorCard>`) and any other surface that mounts
+ * the query under the same key share the cache, so a regenerate from
+ * one surface refreshes the others without a second LLM call.
  */
 export interface InsightAdvisorPayload {
   insights: InsightResult;

src/components/settings/dashboard-layout-section.tsx

@@ -44,10 +44,6 @@ const WIDGET_LABEL_KEYS: Record<DashboardWidgetId, string> = {
   bpInTarget: "dashboard.bpInTarget",
   oxygenSaturation: "measurements.typeOxygenSaturation",
   achievements: "achievements.title",
-  // v1.4.16 phase D reconcile (CRITICAL C2) — dashboard preview tile
-  // for the polished `<InsightsCardPreview>` (top severity-ordered AI
-  // recommendations + ring confidence meter + "View all" CTA).
-  insightsPreview: "dashboard.insightsPreview",
   // v1.4.25 W8d — VO2 max secondary-metric tile (opt-in).
   vo2Max: "dashboard.vo2Max",
 };

src/lib/__tests__/dashboard-layout.test.ts

@@ -141,13 +141,13 @@ describe("DEFAULT_DASHBOARD_LAYOUT contract", () => {
     expect(ids).toContain("achievements");
   });
 
-  it("includes the insightsPreview widget (v1.4.16 phase D reconcile C2)", () => {
-    // CRITICAL C2: dashboard preview of the polished AI recommendations
-    // surface. Same Zod-enum-drift trap as A5 — if the widget id isn't
-    // listed here, the API PUT silently 422s and the layout toggle
-    // never persists. Pin the contract to catch a regression early.
+  it("does NOT advertise a retired insightsPreview widget (v1.4.27 B1)", () => {
+    // v1.4.27 B1 retired the standalone dashboard preview because it
+    // duplicated the much-richer `/insights` advisor surface. The
+    // widget id must stay out of the default layout so a stale client
+    // cannot reintroduce it via a layout PUT.
     const ids = DEFAULT_DASHBOARD_LAYOUT.widgets.map((w) => w.id);
-    expect(ids).toContain("insightsPreview");
+    expect(ids).not.toContain("insightsPreview");
   });
 
   it("survives a round-trip through serialize → resolve unchanged", () => {

src/lib/dashboard-layout.ts

@@ -29,11 +29,6 @@ export const DASHBOARD_WIDGET_IDS = [
   "bpInTarget",
   "oxygenSaturation",
   "achievements",
-  // v1.4.16 phase D reconcile (CRITICAL C2) — dashboard preview of the
-  // top severity-ordered AI recommendations + "View all" CTA. Has only
-  // a `visible` (chart-row) surface; tileVisible is forced false because
-  // there's no tile-strip representation for it.
-  "insightsPreview",
   // v1.4.25 W8d — VO2 max trend tile (opt-in, secondary-metric pattern).
   // Self-gates on having any VO2_MAX sample; default-invisible so
   // existing dashboards stay unchanged until the user enables it in
@@ -216,22 +211,11 @@ export const DEFAULT_DASHBOARD_LAYOUT: DashboardLayout = {
     // `tileVisible` is forced false because there is no tile surface
     // for this widget; only the chart-row card.
     { id: "achievements", visible: true, tileVisible: false, order: 13 },
-    // v1.4.16 phase D reconcile (CRITICAL C2) — AI insights preview
-    // anchored at the top of the chart row. Default visible so users
-    // discover the feature without hunting through Settings →
-    // Dashboard; self-gates on having a generated payload AND at least
-    // one recommendation (`<InsightsCardPreview>` returns null
-    // otherwise). `tileVisible` forced false because the preview lives
-    // in the chart row, not the tile strip. The dashboard page
-    // renders this entry independently of the sorted `charts[]` array
-    // so it stays pinned above charts even if the user reorders other
-    // widgets; only the boolean visibility flag is consumed.
-    { id: "insightsPreview", visible: true, tileVisible: false, order: 14 },
     // v1.4.25 W8d — VO2 max trend tile. Default-invisible on both
     // surfaces; opt-in via Settings → Dashboard. Only the tile-strip
     // representation today (`visible` stays false so the chart-row
     // gate never fires; the chart card lands in v1.5).
-    { id: "vo2Max", visible: false, tileVisible: false, order: 15 },
+    { id: "vo2Max", visible: false, tileVisible: false, order: 14 },
   ],
 };
 

src/lib/query-keys.ts

@@ -23,11 +23,11 @@ export const queryKeys = {
   insightsComprehensive: () => ["insights", "comprehensive"] as const,
   insightsTargets: () => ["insights", "targets"] as const,
   /**
-   * v1.4.16 phase D reconcile (CRITICAL C1 + C2) — shared cache key for
-   * the rich `/api/insights/generate` advisor payload. Both `/insights`
-   * (full `<InsightAdvisorCard>`) and `/` (`<InsightsCardPreview>`) read
-   * this key so a regenerate on one surface refreshes the other without
-   * a second LLM round-trip.
+   * Shared cache key for the rich `/api/insights/generate` advisor
+   * payload. `/insights` (full `<InsightAdvisorCard>`) and any other
+   * surface that subscribes under this key share the same cache so a
+   * regenerate on one surface refreshes the others without a second
+   * LLM round-trip.
    */
   insightsAdvisor: () => ["insights", "advisor"] as const,
   insightsBpStatus: (locale: string) =>